MERGE_BITS(I, J, MASK) (Fortran 2008)

Purpose

Merges bits under mask.

Class

Elemental function

Argument type and attributes

I

An INTENT(IN) INTEGER or boz-literal CONSTANT

J

An INTENT(IN) INTEGER or boz-literal CONSTANT.

If both I and J are of type INTEGER they must have the same kind type parameter. I and J must not both be boz-literal CONSTANT.

MASK

An argument of type integer or a boz-literal constant. If MASK is of type integer, its kind must be the same as each other argument of type integer.

Result type and attributes

Same as I if I is of type integer. Otherwise, same as J.

Result value

If any argument is a boz-literal constant, it is first converted to the type and kind type parameter of the result. The result has the value of IOR (IAND (I, MASK),IAND (J, NOT (MASK))).